Covid-19 Modelling

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For Singapore as of 2020-07-09, the best fit SEIR model is shown as:

Optimized SEIR model for the current corona virus evolution for Singapore

Associated operational parameters:

\(S_0\) = 4.517351e+04 cases;

\(\beta\) = 4.841138e-06 (cases days)\(^{-1}\);

\(\sigma\) = 8.373936e-02 days\(^{-1}\);

\(\gamma\) = 3.433651e-02 days\(^{-1}\).

These translate into the more familiar parameters:

R = 6.369056;

T\(_{inc}\) = 11.941815 days;

T\(_{inf}\) = 29.123517 days.

The additional initial values were:

\(E_0\) = 7.20e+01, \(I_0\) = 5.40e+01, \(R_0\) = 1.80e+01.

As a measure of quality of the convergence of the annealing algorithm, the final error measure was:

\(\epsilon\) = 4.016937e+03 cases; with a relative error, \(\epsilon/S_0\) = 8.89e-02 or 8.9%

Leslie J. Mulder
401 - 2071 Kingsway Ave,
Port Coquitlam, B.C,
Canada V3C 6N2

Copyright © 2020 Leslie J. Mulder